使用 Java 来读取 Excel 文件，检查每一行中的 URL，并将不符合条件的行标记为红色

 -- 日、时、分、秒，这是计时的单位，惜时就应该惜日、惜时、惜分、惜秒。

用 Java 来读取 Excel 文件，检查每一行中的 URL，并将不符合条件的行标记为红色。以下是一个简单的示例，使用 Apache POI 进行 Excel 操作：

首先，你需要添加 Apache POI 的依赖。如果是 Maven 项目，可以在 pom.xml 文件中添加：

<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi</artifactId>
    <version>4.1.2</version> <!-- 使用适当的版本 -->
</dependency>
 

json 格式

{
    "yourArrayKey":[
    {
        
        "url":"http://epaper.jwb.com.cn/jwb"
        
    },
    {
        "url":"http://epaper.jwb.com.cn/jwb"
    }
]
}

import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URL;public class ExcelValidator {public static void main(String[] args) {String excelFilePath = "path/to/your/excel/file.xlsx";try {markInvalidRows(excelFilePath);} catch (IOException e) {e.printStackTrace();}}private static void markInvalidRows(String excelFilePath) throws IOException {FileInputStream excelFile = new FileInputStream(new File(excelFilePath));Workbook workbook = new XSSFWorkbook(excelFile);Sheet sheet = workbook.getSheetAt(0);for (Row row : sheet) {Cell urlCell = row.getCell(0); // Assuming URL is in the first column (index 0)if (urlCell != null && urlCell.getCellType() == CellType.STRING) {String url = urlCell.getStringCellValue();boolean isValid = isValidUrl(url);if (!isValid) {markRowAsInvalid(row);}}}excelFile.close();// Save the changes back to the Excel fileFileOutputStream outputStream = new FileOutputStream(excelFilePath);workbook.write(outputStream);workbook.close();outputStream.close();}private static boolean isValidUrl(String urlString) {try {URL url = new URL(urlString);HttpURLConnection connection = (HttpURLConnection) url.openConnection();connection.setRequestMethod("HEAD");connection.connect();int responseCode = connection.getResponseCode();long responseTime = connection.getHeaderFieldDate("Date", 0) - connection.getHeaderFieldDate("Date", 0);return responseCode == HttpURLConnection.HTTP_OK && responseTime <= 20;} catch (Exception e) {return false;}}private static void markRowAsInvalid(Row row) {CellStyle style = row.getSheet().getWorkbook().createCellStyle();style.setFillForegroundColor(IndexedColors.RED.getIndex());style.setFillPattern(FillPatternType.SOLID_FOREGROUND);for (Cell cell : row) {cell.setCellStyle(style);}}
}